The 1991 Pontiac Grand Prix, part of the W-body platform, represented a significant redesign from its predecessors. Available as a coupe and sedan, it spanned model years from 1988 to 1996. Key trims included the STE, SE, and the performance-oriented GTP. Its popularity stemmed from its sporty styling, comfortable ride, and available powerful engines, appealing to those seeking a stylish American personal luxury car with a touch of performance.
The Good
The 1991 Grand Prix offers a compelling blend of responsive V6 performance, a comfortable and quiet ride for daily driving, and a distinctive sporty design that still turns heads. It provides good value for its era, balancing practicality with a touch of American muscle car spirit.
The Bad
Potential buyers should be aware of common issues like transmission problems, particularly with the 4-speed automatic. Electrical gremlins, rust in the lower body panels, and wear on interior components are also points to watch for on these older vehicles.
1991 Pontiac Grand Prix: Quick Overview
- Engine Options: The 1991 Pontiac Grand Prix was offered with several engine choices to cater to different needs and performance desires. The base engine was typically a 3.1-liter V6, providing adequate power for everyday driving. For those seeking more performance, an optional 3.4-liter V6 was available, especially in higher trims like the GTP. The potent 3.4-liter Twin Dual Cam V6 was the standout performer, offering significant horsepower gains and a sportier driving experience.
- Horsepower: Horsepower figures varied by engine. The standard 3.1L V6 generally produced around 140 horsepower. The upgraded 3.4L V6 offered approximately 160 horsepower. The top-tier 3.4L Twin Dual Cam V6 boasted around 200 horsepower, making it the most potent option for enthusiasts.
- Fuel Economy: Fuel economy varied depending on the engine and transmission. For the 3.1L V6, expect estimates in the range of 18-20 MPG city and 26-28 MPG highway. The more powerful 3.4L engines would see slightly lower figures, likely in the 17-19 MPG city and 24-26 MPG highway range.
- 0-60 Times: Acceleration varied significantly with engine choice. Models equipped with the base 3.1L V6 typically took around 9-10 seconds to reach 60 mph. With the 3.4L V6, this could be reduced to the 8-9 second range. The GTP models with the Twin Dual Cam V6 could achieve 0-60 mph in approximately 7-8 seconds, offering spirited performance for its class.
- Towing Capacity: As a personal luxury coupe/sedan, the 1991 Pontiac Grand Prix was not typically equipped or designed for significant towing. Towing capacity was generally not a highlighted feature or option.
- Trim-Level Features:
- SE: The SE trim often served as a well-equipped mid-range option, typically featuring power windows and locks, air conditioning, cruise control, and a decent stereo system.
- STE: The STE (Sport Touring Edition) usually added sportier suspension tuning, enhanced interior appointments, and potentially a more powerful engine option than the base SE.
- GTP: The Grand Touring Package (GTP) was the performance pinnacle, usually including the most powerful engine (3.4L Twin Dual Cam V6), performance-tuned suspension, upgraded brakes, special badging, and often more aggressive styling cues.
1991 Pontiac Grand Prix Specifications
Vehicle Information
| Year | 1991 |
| Make | Pontiac |
| Model | Grand Prix |
| Trim | - |
| Style | Coupe 5-Speed Manual |
| Type | Coupe |
| Category | Mid-Size Car |
Manufacturing Details
| Made In | United States |
| Manufacturing City | KANSAS CITY |
Dimensions
| Doors | 2-Door |
| Curb Weight | 3323 pounds |
| Gross Vehicle Weight Rating | - |
| Overall Height | 52.80 inches |
| Overall Length | 194.80 inches |
| Overall Width | 71.90 inches |
| Wheelbase Length | 107.50 inches |
| Standard Seating | 4 |
Engine & Performance
| Engine | 3.4L V6 DOHC 24V |
| Engine Size | 3.4L |
| Engine Cylinders | 6 |
| Transmission | 5-Speed Manual |
| Transmission Type | Manual |
| Transmission Speeds | 5-Speed |
| Drivetrain | Front-Wheel Drive |
Additional Features
| Anti-Brake System | Non-ABS 4-Wheel ABS |
| Steering Type | Rack & Pinion |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $19,794 |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 1991 Pontiac Grand Prix Have?
The 1991 Pontiac Grand Prix, while offering a stylish and comfortable ride, is not without its common issues and long-term reliability concerns. One of the most frequently reported problems across various model years of this generation, including 1991, involves the automatic transmission. Specifically, the 4-speed THM-440T4 (or 4T60-E in later iterations) can be prone to slipping, hard shifting, and eventual failure if not properly maintained. Issues with the torque converter clutch solenoid and internal seal failures are not uncommon.
Another area of concern is the electrical system. Owners have reported various gremlins, including malfunctioning power windows, intermittent interior lighting issues, and problems with the anti-lock braking system (ABS). The body control module (BCM) can also be a source of electrical headaches.
Rust is a significant factor to consider, especially in regions with harsh winters and road salt. The lower body panels, rocker arms, wheel wells, and subframes are particularly susceptible to corrosion, which can compromise structural integrity and lead to costly repairs.
Engine-wise, while the V6 engines are generally robust, leaks from the intake manifold gaskets have been reported, particularly on the 3.1L engine. Over time, the cooling system can also develop leaks, and radiator failure is not unheard of. Suspension components like ball joints, tie rod ends, and struts can also wear out with age and mileage, leading to a less stable and comfortable ride.
Regarding specific recalls for the 1991 model year, checks should be made with the National Highway Traffic Safety Administration (NHTSA) for any safety-related campaigns that may have been issued. However, general long-term reliability is often hampered by the age of the vehicle and the typical wear and tear associated with components like the transmission and electrical systems. Regular and thorough maintenance, especially fluid changes for the transmission and coolant, is crucial for mitigating these issues and maximizing the lifespan of a 1991 Grand Prix.
Another area of concern is the electrical system. Owners have reported various gremlins, including malfunctioning power windows, intermittent interior lighting issues, and problems with the anti-lock braking system (ABS). The body control module (BCM) can also be a source of electrical headaches.
Rust is a significant factor to consider, especially in regions with harsh winters and road salt. The lower body panels, rocker arms, wheel wells, and subframes are particularly susceptible to corrosion, which can compromise structural integrity and lead to costly repairs.
Engine-wise, while the V6 engines are generally robust, leaks from the intake manifold gaskets have been reported, particularly on the 3.1L engine. Over time, the cooling system can also develop leaks, and radiator failure is not unheard of. Suspension components like ball joints, tie rod ends, and struts can also wear out with age and mileage, leading to a less stable and comfortable ride.
Regarding specific recalls for the 1991 model year, checks should be made with the National Highway Traffic Safety Administration (NHTSA) for any safety-related campaigns that may have been issued. However, general long-term reliability is often hampered by the age of the vehicle and the typical wear and tear associated with components like the transmission and electrical systems. Regular and thorough maintenance, especially fluid changes for the transmission and coolant, is crucial for mitigating these issues and maximizing the lifespan of a 1991 Grand Prix.
How long will the 1991 Pontiac Grand Prix last?
Estimating average mileage for a 1991 Pontiac Grand Prix requires considering its age and the typical use of such vehicles. Many examples have likely surpassed 150,000 to 200,000 miles. With diligent maintenance, including regular fluid changes for the engine and transmission, and addressing minor issues proactively, these cars can remain on the road for 20 to 25 years or more. However, long-term durability is significantly impacted by the common weaknesses. The transmission, as mentioned, is often a limiting factor, with many needing rebuilds or replacements around the 100,000-150,000 mile mark. Rust can also severely curtail its lifespan in certain climates. While the core engine can be durable, other components like alternators, starters, and fuel pumps will eventually require replacement as part of normal wear and tear.
What Technology & Safety Features are Included?
The 1991 Pontiac Grand Prix, in its era, offered a respectable array of technology and safety features for a personal luxury coupe and sedan, though it predates many of today's advanced systems.
Entertainment systems typically included an AM/FM stereo radio, often with a cassette player. Higher trim levels, especially the GTP, might have offered a premium sound system with more speakers and potentially graphic equalizer controls. Power antennas were a common feature.
In terms of driver-assistance features, options were limited by modern standards. Cruise control was a standard or widely available feature. Anti-lock brakes (ABS) were often available as an option or standard on higher trims, providing improved stopping control in emergency situations. Traction control was generally not a feature found on this model year.
Safety features included standard driver and passenger airbags. Seatbelt pretensioners were also becoming more common. The car's construction aimed for a balance of comfort and safety, with a reinforced passenger compartment. For crash-test ratings, specific data for the 1991 model year can be found through historical NHTSA reports. Generally, vehicles of this era, while improving, did not achieve the same safety scores as modern vehicles due to advancements in structural design, airbag technology, and restraint systems. Expect moderate performance in frontal and side-impact tests of its time.
Optional features could have included power-adjustable front seats, a tilt steering wheel, and possibly a sunroof, depending on the trim level and specific package chosen. The climate control system was typically manual, though automatic climate control might have been an option on top trims. The focus was on comfort and convenience rather than cutting-edge tech.
Entertainment systems typically included an AM/FM stereo radio, often with a cassette player. Higher trim levels, especially the GTP, might have offered a premium sound system with more speakers and potentially graphic equalizer controls. Power antennas were a common feature.
In terms of driver-assistance features, options were limited by modern standards. Cruise control was a standard or widely available feature. Anti-lock brakes (ABS) were often available as an option or standard on higher trims, providing improved stopping control in emergency situations. Traction control was generally not a feature found on this model year.
Safety features included standard driver and passenger airbags. Seatbelt pretensioners were also becoming more common. The car's construction aimed for a balance of comfort and safety, with a reinforced passenger compartment. For crash-test ratings, specific data for the 1991 model year can be found through historical NHTSA reports. Generally, vehicles of this era, while improving, did not achieve the same safety scores as modern vehicles due to advancements in structural design, airbag technology, and restraint systems. Expect moderate performance in frontal and side-impact tests of its time.
Optional features could have included power-adjustable front seats, a tilt steering wheel, and possibly a sunroof, depending on the trim level and specific package chosen. The climate control system was typically manual, though automatic climate control might have been an option on top trims. The focus was on comfort and convenience rather than cutting-edge tech.
What Colors Options are Available?
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1991 Pontiac Grand Prix Prices and Market Value
When new, the 1991 Pontiac Grand Prix had an MSRP that typically ranged from approximately $16,000 for a base SE model to upwards of $22,000-$24,000 for a well-equipped GTP. As with most vehicles, depreciation was significant in the initial years.
Currently, used market prices for a 1991 Grand Prix vary widely based on condition, mileage, and trim level. Expect to find them anywhere from $1,500 for projects or high-mileage examples to $5,000-$7,000 or even more for pristine, low-mileage GTP models. Factors significantly affecting resale value include the presence of rust, the condition of the transmission, the overall mechanical health, and whether it's a sought-after performance trim like the GTP. Well-maintained examples, especially those with documentation of care, will command higher prices.
Currently, used market prices for a 1991 Grand Prix vary widely based on condition, mileage, and trim level. Expect to find them anywhere from $1,500 for projects or high-mileage examples to $5,000-$7,000 or even more for pristine, low-mileage GTP models. Factors significantly affecting resale value include the presence of rust, the condition of the transmission, the overall mechanical health, and whether it's a sought-after performance trim like the GTP. Well-maintained examples, especially those with documentation of care, will command higher prices.
1991 Pontiac Grand Prix Cost of Ownership
Owning a 1991 Pontiac Grand Prix can be relatively economical if you are a DIY mechanic or find a well-maintained example. Insurance costs are generally low due to its age and market value. Fuel costs depend on your driving habits and the engine, but V6 models are reasonably efficient for their size. Maintenance costs can be moderate; routine items like oil changes and tire rotations are standard. However, repair costs can escalate, especially if transmission issues or significant rust repair are needed. These are not costly to own if kept up, but major repairs can make them less economical.
1991 Pontiac Grand Prix Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
16.50 gallons
City Mileage
17 miles/gallon
Highway Mileage
27 miles/gallon
1991 Pontiac Grand Prix Safety Rating
NHTSA
IIHS
1991 Pontiac Grand Prix Warranty
Basic
Original warranty
0 months / No data
Estimated remaining
Expired
Powertrain
Original warranty
0 months / No data
Estimated remaining
Expired
Rust
Original warranty
0 months / No data
Estimated remaining
Expired
1991 Pontiac Grand Prix Insurance
Insurance for a 1991 Pontiac Grand Prix is moderately priced, reflecting its status as a Coupe with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1991 Pontiac Grand Prix Compare to Other Coupe?
The 1991 Pontiac Grand Prix competed in a segment filled with established players.
Performance: In terms of performance, the Grand Prix GTP with its 3.4L Twin Dual Cam V6 was a strong contender, offering competitive acceleration that could rival or surpass some of its peers. Base models, however, were more in line with the general performance of rivals.
Features: Features were generally competitive for the early 90s. It offered a blend of comfort and sportiness. Rivals like the Ford Thunderbird/Mercury Cougar offered similar coupe styling and V6/V8 options, sometimes with more robust V8 power. The Chevrolet Lumina Coupe offered a similar W-body platform but with a slightly different styling and less aggressive performance focus in its standard trims. The Dodge Intrepid, a more modern FWD competitor introduced around this time, offered more advanced styling and potentially more interior space.
Reliability: Historically, the Grand Prix's reliability, particularly concerning its automatic transmissions, has been a point of concern when compared to some Japanese rivals like the Toyota Camry Coupe (if available, though less common) or Honda Accord Coupe, which were known for their bulletproof powertrains and overall durability. These Japanese alternatives often offered superior long-term reliability and fewer electrical gremlins.
Price: The Grand Prix was generally priced competitively within its segment, offering a good value proposition for American buyers seeking a sporty, stylish car. However, its initial depreciation was typical for American cars of the era.
Alternatives:
Performance: In terms of performance, the Grand Prix GTP with its 3.4L Twin Dual Cam V6 was a strong contender, offering competitive acceleration that could rival or surpass some of its peers. Base models, however, were more in line with the general performance of rivals.
Features: Features were generally competitive for the early 90s. It offered a blend of comfort and sportiness. Rivals like the Ford Thunderbird/Mercury Cougar offered similar coupe styling and V6/V8 options, sometimes with more robust V8 power. The Chevrolet Lumina Coupe offered a similar W-body platform but with a slightly different styling and less aggressive performance focus in its standard trims. The Dodge Intrepid, a more modern FWD competitor introduced around this time, offered more advanced styling and potentially more interior space.
Reliability: Historically, the Grand Prix's reliability, particularly concerning its automatic transmissions, has been a point of concern when compared to some Japanese rivals like the Toyota Camry Coupe (if available, though less common) or Honda Accord Coupe, which were known for their bulletproof powertrains and overall durability. These Japanese alternatives often offered superior long-term reliability and fewer electrical gremlins.
Price: The Grand Prix was generally priced competitively within its segment, offering a good value proposition for American buyers seeking a sporty, stylish car. However, its initial depreciation was typical for American cars of the era.
Alternatives:
- Similar: Ford Thunderbird/Mercury Cougar (for coupe styling and V8 options), Chevrolet Lumina Coupe (for platform sharing and family resemblance).
- Potentially Better: Toyota Camry Coupe or Honda Accord Coupe (for superior reliability and build quality, though often less sporty), Dodge Intrepid (for more modern design and features if found in similar condition). If performance is paramount and reliability is secondary, a V8-powered Thunderbird could be considered.
Final Verdict: Is the 1991 Pontiac Grand Prix a Good Coupe?
The 1991 Pontiac Grand Prix is ideal for enthusiasts who appreciate classic American styling with a sporty flair and are comfortable with potential maintenance. It's best suited for buyers seeking an affordable entry into a stylish coupe or sedan from the early 90s, particularly those with mechanical aptitude or access to a trusted mechanic.
It is worth buying under specific conditions: prioritize well-maintained examples, ideally low-mileage GTP trims if performance is a priority. Avoid cars with significant rust or known transmission issues, as these can quickly become costly projects. Buying used is the only option, and investing in a pre-purchase inspection is highly recommended. It's a car for the nostalgic driver who values its character over absolute reliability.
It is worth buying under specific conditions: prioritize well-maintained examples, ideally low-mileage GTP trims if performance is a priority. Avoid cars with significant rust or known transmission issues, as these can quickly become costly projects. Buying used is the only option, and investing in a pre-purchase inspection is highly recommended. It's a car for the nostalgic driver who values its character over absolute reliability.
Simon A
Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.